In output of ps -elf command in linux, we can recognize that process flag of 4 and 1, and process flag of 5, (sum of 1 and 4), but what is meaning of process flag 0 ?
unfortunately, man does not help ...

Quick question. Is it possible to create directory in /proc that starts with number but isn't process directory (where name is PID)? I write software that searches for process directories and I wonder ...

I read at multiple places (e.g. here http://elinux.org/Debugging_by_printing), that you can change the console log level by echoing an integer to /proc/sys/kernel/printk. If that worked shouldn't the ...

There a few helpful scripts out there, which give some useful information. But I would like to calculate those values myself. I am interested in values like USS and PSS.
I already had my first attempt ...

I was wondering how field cancelled_write_bytes from /proc/[pid]/io works, so I've created a file (dd) and then deleted it (rm). I was expecting to see cancelled_write_bytes ~equal to file size while ...

Which file in /proc gets read by the kernel during the boot up process? This was a question on my LPIC 101 test that I think I might have answered wrong. I searched on google and some other places but ...

I was taught, that the sync command writes the data stored within the cache of the RAM onto hard-disk, this release should be displayed in /proc/meminfo. However when I cat /proc/meminfo before and ...

I'm writing a script that parses the output of lsof to show a list of what processes have sockets open (similar to what netstat shows). lsof also gives me a file descriptor. What I want to do now is ...

I'm working on a network monitor for Linux, without packet sniffing. I'm planning to read the network statistics and related data from /proc/net files.
I know that /proc is the mount point of process ...

htop has a great way to show CPU usage.
It shows the activity (usage in %) of each cores, and each core gauge is divided into three parts :
blue: low priority processes
green: normal processes
red: ...